Jim, but that is basically a speed light setup with a little more power. There's a recent review about these on FM somewhere.

I think having both speed lights and mono or packs ready when you need them is a good way to go. This way you use what you need when you need it. What circumstance do you find yourself in where your OCF can't handle it? Bright sun in the early afternoon? even then the Quadra may or may not cut it because they are still less power than your current Einstein.

Are you looking at these (and the other recent spending spree) as a need or want? If a want, you might as well go with the Quadras because the yearning may not end until you have them